/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
- Copyright (C) 2008-2010 Marco Costalba, Joona Kiiski, Tord Romstad
+ Copyright (C) 2008-2012 Marco Costalba, Joona Kiiski, Tord Romstad
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
-#if !defined(_MSC_VER)
+#if defined(_WIN32) || defined(_WIN64)
+
+#define NOMINMAX // disable macros min() and max()
+#include <windows.h>
+
+#else
-# include <sys/time.h>
-# include <sys/types.h>
# include <unistd.h>
# if defined(__hpux)
# include <sys/pstat.h>
# endif
-#else
-
-#define _CRT_SECURE_NO_DEPRECATE
-#include <windows.h>
-#include <sys/timeb.h>
-
#endif
#if !defined(NO_PREFETCH)
# include <xmmintrin.h>
#endif
-#include <cassert>
-#include <cstdio>
+#include <algorithm>
#include <iomanip>
#include <iostream>
#include <sstream>
+#include <streambuf>
-#include "bitcount.h"
#include "misc.h"
#include "thread.h"
using namespace std;
-/// Version number. If EngineVersion is left empty, then AppTag plus
-/// current date (in the format YYMMDD) is used as a version number.
+/// Version number. If Version is left empty, then Tag plus current
+/// date (in the format YYMMDD) is used as a version number.
-static const string AppName = "Stockfish";
-static const string EngineVersion = "";
-static const string AppTag = "";
+static const string Version = "";
+static const string Tag = "";
-/// engine_name() returns the full name of the current Stockfish version.
+/// engine_info() returns the full name of the current Stockfish version.
/// This will be either "Stockfish YYMMDD" (where YYMMDD is the date when
/// the program was compiled) or "Stockfish <version number>", depending
-/// on whether the constant EngineVersion is empty.
+/// on whether Version is empty.
-const string engine_name() {
+const string engine_info(bool to_uci) {
const string months("Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec");
- const string cpu64(CpuIs64Bit ? " 64bit" : "");
-
- if (!EngineVersion.empty())
- return AppName + " " + EngineVersion + cpu64;
+ const string cpu64(Is64Bit ? " 64bit" : "");
+ const string popcnt(HasPopCnt ? " SSE4.2" : "");
- stringstream s, date(__DATE__); // From compiler, format is "Sep 21 2008"
string month, day, year;
+ stringstream s, date(__DATE__); // From compiler, format is "Sep 21 2008"
+
+ if (Version.empty())
+ {
+ date >> month >> day >> year;
- date >> month >> day >> year;
+ s << "Stockfish " << Tag
+ << setfill('0') << " " << year.substr(2)
+ << setw(2) << (1 + months.find(month) / 4)
+ << setw(2) << day;
+ }
+ else
+ s << "Stockfish " << Version;
- s << setfill('0') << AppName + " " + AppTag + " "
- << year.substr(2, 2) << setw(2)
- << (1 + months.find(month) / 4) << setw(2)
- << day << cpu64;
+ s << cpu64 << popcnt << (to_uci ? "\nid author ": " by ")
+ << "Tord Romstad, Marco Costalba and Joona Kiiski";
return s.str();
}
-/// Our brave developers! Required by UCI
+/// Debug functions used mainly to collect run-time statistics
-const string engine_authors() {
+static uint64_t hits[2], means[2];
- return "Tord Romstad, Marco Costalba and Joona Kiiski";
-}
+void dbg_hit_on(bool b) { hits[0]++; if (b) hits[1]++; }
+void dbg_hit_on_c(bool c, bool b) { if (c) dbg_hit_on(b); }
+void dbg_mean_of(int v) { means[0]++; means[1] += v; }
+void dbg_print() {
-/// Debug stuff. Helper functions used mainly for debugging purposes
+ if (hits[0])
+ cerr << "Total " << hits[0] << " Hits " << hits[1]
+ << " hit rate (%) " << 100 * hits[1] / hits[0] << endl;
-static uint64_t dbg_hit_cnt0;
-static uint64_t dbg_hit_cnt1;
-static uint64_t dbg_mean_cnt0;
-static uint64_t dbg_mean_cnt1;
+ if (means[0])
+ cerr << "Total " << means[0] << " Mean "
+ << (float)means[1] / means[0] << endl;
+}
-void dbg_print_hit_rate() {
- if (dbg_hit_cnt0)
- cerr << "Total " << dbg_hit_cnt0 << " Hit " << dbg_hit_cnt1
- << " hit rate (%) " << 100 * dbg_hit_cnt1 / dbg_hit_cnt0 << endl;
-}
+/// Our fancy logging facility. The trick here is to replace cout.rdbuf() with
+/// this one that sends the output both to console and to a file, this allow us
+/// to toggle the logging of std::cout to a file while preserving output to
+/// stdout and without changing a single line of code! Idea and code from:
+/// http://groups.google.com/group/comp.lang.c++/msg/1d941c0f26ea0d81
+
+class Logger: public streambuf {
+public:
+ typedef char_traits<char> traits_type;
+ typedef traits_type::int_type int_type;
+
+ Logger() : cout_buf(cout.rdbuf()) {}
+ ~Logger() { set(false); }
+
+ void set(bool b) {
+
+ if (b && !file.is_open())
+ {
+ file.open("out.txt", ifstream::out | ifstream::app);
+ cout.rdbuf(this);
+ }
+ else if (!b && file.is_open())
+ {
+ cout.rdbuf(cout_buf);
+ file.close();
+ }
+ }
-void dbg_print_mean() {
+private:
+ int_type overflow(int_type c) {
- if (dbg_mean_cnt0)
- cerr << "Total " << dbg_mean_cnt0 << " Mean "
- << (float)dbg_mean_cnt1 / dbg_mean_cnt0 << endl;
-}
+ if (traits_type::eq_int_type(c, traits_type::eof()))
+ return traits_type::not_eof(c);
-void dbg_mean_of(int v) {
+ c = cout_buf->sputc(traits_type::to_char_type(c));
- dbg_mean_cnt0++;
- dbg_mean_cnt1 += v;
-}
+ if (!traits_type::eq_int_type(c, traits_type::eof()))
+ c = file.rdbuf()->sputc(traits_type::to_char_type(c));
-void dbg_hit_on(bool b) {
+ return c;
+ }
- dbg_hit_cnt0++;
- if (b)
- dbg_hit_cnt1++;
-}
+ int sync() {
-void dbg_hit_on_c(bool c, bool b) { if (c) dbg_hit_on(b); }
-void dbg_before() { dbg_hit_on(false); }
-void dbg_after() { dbg_hit_on(true); dbg_hit_cnt0--; }
+ int c = cout_buf->pubsync();
+ if (c != -1)
+ c = file.rdbuf()->pubsync();
-/// get_system_time() returns the current system time, measured in milliseconds
+ return c;
+ }
-int get_system_time() {
+ ofstream file;
+ streambuf* cout_buf;
+};
-#if defined(_MSC_VER)
- struct _timeb t;
- _ftime(&t);
- return int(t.time * 1000 + t.millitm);
-#else
- struct timeval t;
- gettimeofday(&t, NULL);
- return t.tv_sec * 1000 + t.tv_usec / 1000;
-#endif
+void logger_set(bool b) {
+
+ static Logger l;
+ l.set(b);
}
int cpu_count() {
-#if defined(_MSC_VER)
+#if defined(_WIN32) || defined(_WIN64)
SYSTEM_INFO s;
GetSystemInfo(&s);
- return Min(s.dwNumberOfProcessors, MAX_THREADS);
+ return std::min(int(s.dwNumberOfProcessors), MAX_THREADS);
#else
# if defined(_SC_NPROCESSORS_ONLN)
- return Min(sysconf(_SC_NPROCESSORS_ONLN), MAX_THREADS);
+ return std::min((int)sysconf(_SC_NPROCESSORS_ONLN), MAX_THREADS);
# elif defined(__hpux)
struct pst_dynamic psd;
if (pstat_getdynamic(&psd, sizeof(psd), (size_t)1, 0) == -1)
return 1;
- return Min(psd.psd_proc_cnt, MAX_THREADS);
+ return std::min((int)psd.psd_proc_cnt, MAX_THREADS);
# else
return 1;
# endif
}
-/// Check for console input. Original code from Beowulf, Olithink and Greko
-
-#ifndef _WIN32
-
-int input_available() {
+/// timed_wait() waits for msec milliseconds. It is mainly an helper to wrap
+/// conversion from milliseconds to struct timespec, as used by pthreads.
- fd_set readfds;
- struct timeval timeout;
-
- FD_ZERO(&readfds);
- FD_SET(fileno(stdin), &readfds);
- timeout.tv_sec = 0; // Set to timeout immediately
- timeout.tv_usec = 0;
- select(16, &readfds, 0, 0, &timeout);
-
- return (FD_ISSET(fileno(stdin), &readfds));
-}
+void timed_wait(WaitCondition& sleepCond, Lock& sleepLock, int msec) {
+#if defined(_WIN32) || defined(_WIN64)
+ int tm = msec;
#else
+ timespec ts, *tm = &ts;
+ uint64_t ms = Time::current_time().msec() + msec;
-int input_available() {
-
- static HANDLE inh = NULL;
- static bool usePipe = false;
- INPUT_RECORD rec[256];
- DWORD nchars, recCnt;
-
- if (!inh)
- {
- inh = GetStdHandle(STD_INPUT_HANDLE);
- if (GetConsoleMode(inh, &nchars))
- {
- SetConsoleMode(inh, nchars & ~(ENABLE_MOUSE_INPUT | ENABLE_WINDOW_INPUT));
- FlushConsoleInputBuffer(inh);
- } else
- usePipe = true;
- }
-
- // When using Standard C input functions, also check if there
- // is anything in the buffer. After a call to such functions,
- // the input waiting in the pipe will be copied to the buffer,
- // and the call to PeekNamedPipe can indicate no input available.
- // Setting stdin to unbuffered was not enough. [from Greko]
- if (stdin->_cnt > 0)
- return 1;
-
- // When running under a GUI the input commands are sent to us
- // directly over the internal pipe. If PeekNamedPipe() returns 0
- // then something went wrong. Probably the parent program exited.
- // Returning 1 will make the next call to the input function
- // return EOF, where this should be catched then.
- if (usePipe)
- return PeekNamedPipe(inh, NULL, 0, NULL, &nchars, NULL) ? nchars : 1;
-
- // Count the number of unread input records, including keyboard,
- // mouse, and window-resizing input records.
- GetNumberOfConsoleInputEvents(inh, &nchars);
-
- // Read data from console without removing it from the buffer
- if (nchars <= 0 || !PeekConsoleInput(inh, rec, Min(nchars, 256), &recCnt))
- return 0;
-
- // Search for at least one keyboard event
- for (DWORD i = 0; i < recCnt; i++)
- if (rec[i].EventType == KEY_EVENT)
- return 1;
+ ts.tv_sec = ms / 1000;
+ ts.tv_nsec = (ms % 1000) * 1000000LL;
+#endif
- return 0;
+ cond_timedwait(sleepCond, sleepLock, tm);
}
-#endif
-
/// prefetch() preloads the given address in L1/L2 cache. This is a non
/// blocking function and do not stalls the CPU waiting for data to be
void prefetch(char* addr) {
-#if defined(__INTEL_COMPILER) || defined(__ICL)
+# if defined(__INTEL_COMPILER) || defined(__ICL)
// This hack prevents prefetches to be optimized away by
// Intel compiler. Both MSVC and gcc seems not affected.
__asm__ ("");
-#endif
+# endif
_mm_prefetch(addr, _MM_HINT_T2);
_mm_prefetch(addr+64, _MM_HINT_T2); // 64 bytes ahead
projects / stockfish / blobdiff